A number of fan-based websites published what they claimed were emails apparently from director of communications Ian Ross criticising, among other things, Elstone's leadership.

While the club have not commented specifically on the matter, Elstone posted a message on his personal blog on evertonfc.com. He said: "Some of you may have seen the various media reports/internet chatter circulating regarding an alleged email leak of private correspondence."

He added: "Not for the first time in the recent past, certain individuals claiming to be Evertonians have made attempts to undermine the people of Everton Football Club by actions almost every one of us would find wholly unacceptable.

"Our experienced senior executive team is dealing with the matter assisted by the club's legal representatives and we will update accordingly and take appropriate action.

"It is disappointing to read what has been written on certain internet forums but I remained buoyed by the fact that this club has the best supporters in football; supporters who I know recognise what's right and what's wrong."

Elstone and owner Bill Kenwright have come in for increased criticism in recent months over the perceived stagnation of the club in terms of finding a buyer and attracting new, outside investment. A second protest march by supporters' group Blue Union will take place before Saturday's home match against Wolves.

Elstone has defended the board's position many times and reiterated that stance, choosing to focus on the positives after the last few days in which Jack Rodwell made his senior England debut, midfielder Marouane Fellaini signed a new five-year contract and Everton were given government permission to become the first Premier League club to open a Free School in the city.

"The challenges faced by us and most of our rivals are there for all to see and we don't shy away from them," said Elstone. "What's true is we are stronger and we will make the biggest difference when we are together.

"At the end of a great week for the club, when we have been saluted both on and off the pitch, Wolves come to visit and we get back to what really matters for Evertonians."